[86.02] Polarimetry of Core-Collapse Supernovae

The traditional use of spectral analysis and light curve
calculations to study core-collapse supernovae do not
provide much insight into the geometry of the expanding
matter. Asymmetries in the explosion, if present, are best
studied by examining the spectropolarimetry of supernovae.
One qualitative conclusion from these studies is that
core-collapse supernovae are linearly polarized at about the
1% level. In addition, the polarization is found to
increase with decreasing H or He envelope mass, suggesting
that the explosion mechanism itself is strongly asymmetric.
Our intent is to determine the asymmetries in these events.
The main expectation from this work is a basis ``grid" of
type II supernovae atmospheres that will aid in classifying
the photospheres of exploding stars.

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